Effects of re-doping on superconducting properties and formation of Hg-1223 superconductors

Authors
Orlando, MTD Sin, A Alsina, F Cunha, AG Mestres, N Calleja, A Pinol, S Emmerich, FG Martinez, LG Segarra, M Obradors, X Baggio-Saitovitch, E
Citation
Mtd. Orlando et al., Effects of re-doping on superconducting properties and formation of Hg-1223 superconductors, PHYSICA C, 328(3-4), 1999, pp. 257-269
Citations number
32
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA C
ISSN journal
09214534 → ACNP
Volume
328
Issue
3-4
Year of publication
1999
Pages
257 - 269
Database
ISI
SICI code
0921-4534(199912)328:3-4<257:EOROSP>2.0.ZU;2-1
Abstract
The influence of the rhenium content on the formation of the Hg1-xRexBa2Ca2 Cu3O8+delta superconductors is reported. For the same synthesis conditions, different samples are obtained, as shown by XRD and magnetic measurements. This proves that the synthesis conditions have to be adapted precisely to the rhenium content. Nevertheless, the Re concentration in the superconduct or sample has the tendency to form a stable ratio with respect to Hg; i.e., 1/4 Re and 3/4 Hg, as was found by EDX analysis. Moreover, a clear influen ce of the Re content on the oxygen delta of the HgOdelta plane was observed by micro-Raman analysis. (C) 1999 Elsevier Science B.V. All rights reserve d.